1c4762a1bSJed Brown! Tests calling PetscOptionsSetValue() before PetscInitialize(): Fortran Example 2c4762a1bSJed Brown 3c4762a1bSJed Brownprogram main 4c4762a1bSJed Brown#include <petsc/finclude/petscsys.h> 5c4762a1bSJed Brown use petscsys 6c4762a1bSJed Brown 7c4762a1bSJed Brown implicit none 8c4762a1bSJed Brown PetscErrorCode :: ierr 9c4762a1bSJed Brown PetscMPIInt :: myRank,mySize 10c4762a1bSJed Brown character(len=80) :: outputString 11c4762a1bSJed Brown 12c4762a1bSJed Brown ! Every PETSc routine should begin with the PetscInitialize() routine. 13c4762a1bSJed Brown 14c4762a1bSJed Brown call PetscOptionsSetValue(PETSC_NULL_OPTIONS,"-no_signal_handler","true",ierr) 15c4762a1bSJed Brown call PetscInitialize(PETSC_NULL_CHARACTER,ierr) 16c4762a1bSJed Brown if (ierr/=0) then 17c4762a1bSJed Brown write(6,*) 'Unable to initialize PETSc' 18c4762a1bSJed Brown stop 19c4762a1bSJed Brown endif 20c4762a1bSJed Brown 21c4762a1bSJed Brown ! Since when PetscInitialize() returns with an error the PETSc data structures 22c4762a1bSJed Brown ! may not be set up hence we cannot call CHKERRA() hence directly return the error code. 23c4762a1bSJed Brown 24c4762a1bSJed Brown ! Since PetscOptionsSetValue() is called before the PetscInitialize() we cannot call 25c4762a1bSJed Brown ! CHKERRA() on the error code and just return it directly. 26c4762a1bSJed Brown 27c4762a1bSJed Brown ! We can now change the communicator universe for PETSc 28c4762a1bSJed Brown 29c4762a1bSJed Brown call MPI_Comm_size(MPI_COMM_WORLD,mySize,ierr); CHKERRA(ierr) 30c4762a1bSJed Brown call MPI_Comm_rank(MPI_COMM_WORLD,myRank,ierr); CHKERRA(ierr) 31c4762a1bSJed Brown write(outputString,*) 'Number of processors =',mySize,'rank =',myRank,'\n' 32c4762a1bSJed Brown call PetscPrintf(PETSC_COMM_WORLD,outputString,ierr); CHKERRA(ierr) 33c4762a1bSJed Brown call PetscFinalize(ierr) 34c4762a1bSJed Brown 35c4762a1bSJed Brownend program main 36c4762a1bSJed Brown 37c4762a1bSJed Brown!/*TEST 38c4762a1bSJed Brown! 39c4762a1bSJed Brown! test: 40c4762a1bSJed Brown! nsize: 2 41c4762a1bSJed Brown! args: -options_view -get_total_flops 42*c20d7725SJed Brown! filter: egrep -v "(malloc|display|nox|Total flops|saws_port_auto_select|vecscatter_mpi1|options_left|error_output_stdout|check_pointer_intensity|cuda_initialize|use_gpu_aware_mpi)" 43c4762a1bSJed Brown! 44c4762a1bSJed Brown!TEST*/ 45